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galactic longitude |
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galactic longitude [gə′lak·tik ′län·jə‚tüd] (astronomy) Angular distance east of sidereal hour angle 94.4° along the galactic equator; the arc of the galactic equator or the angle at the galactic pole between the great circle through the intersection of the galactic equator and the celestial equator in Sagittarius (SHA 94.4°) and a great circle through the galactic poles, measured eastward from the great circle through SHA 94.4° through 360°. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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From all of this they derive a general drift of galaxies at something like 600 or 700 kilometers per second toward a point approximately at galactic longitude 290[deg. HEAO-1 did find similar ridgelike emissions along the galactic plane at galactic longitudes greater than 50[deg. |
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